Best Affordable Gaming Desktop (Black Friday)?

Hi, I need a desktop for gaming, and was wondering if you all know if any good ones, I'm kinda on a budget (below 600$) and I want it to be able to run most shooter games, bo3 etc… And minecraft, while recording them, I also want it to be Windows 8/8.1 and to have a lot of ram, and a better processor than i3 because my laptop is i3 and can't run many games, also I don't really know how to build a desktop so… If there are any good deals for desktops for blackfriday, please link them:D

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